What is ISR (In-Sync Replicas) in Kafka?What is ISR? ISR (In-Sync Replicas) is a fundamental concept in Kafka that represents a set of replicas that are in sync with the leader partition. This set includes the leader replica itself and all follower replicas that are actively syncing with t...Mar 5, 2025·3 min read
How Does Kafka Consumer Rebalance Work?What is Consumer Rebalance? When you run Kafka with multiple consumers, you'll need to handle Consumer Rebalance. It happens when Kafka needs to shuffle around which consumer reads from which partition - usually when consumers come and go from your c...Feb 26, 2025·3 min read
What are Topics and Partitions in Kafka?What is a Topic? A Topic is Kafka's fundamental building block for organizing messages. It's essentially a feed or channel where messages flow through. If Kafka were a post office, Topics would be like different mailboxes, each dedicated to a specifi...Feb 25, 2025·2 min read
